6. Two mark exercise problems II

If \(U = \{x: x \in N, x \leq 10\}\), \(A = \{2, 3, 4, 8, 10\}\) and \(B = \{1, 2, 5, 8, 10\}\), then verify that \(n(A \cup B) = n(A) + n(B) - n(A \cap B)\).

 

Answer:

 

\(n(A \cup B) =\)  ---- (\(1\))

 

\(n(A) =\)

 

\(n(B) =\)

 

\(n(A \cap B) =\)

 

\(n(A) + n(B) - n(A \cap B) =\)  ---- (\(2\))